Patents by Inventor Rajesh Krishan Gandhi

Rajesh Krishan Gandhi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20120116471
    Abstract: One aspect of this disclosure relates to a system for dynamic battery management in implantable medical devices. An embodiment of the system includes two or more devices for measuring battery capacity for an implantable medical device battery. The embodiment also includes a controller connected to the measuring devices. The controller is adapted to combine the measurements from the measuring devices using a weighted average to determine battery capacity consumed. According to various embodiments, at least one of the measuring devices includes a coulometer. At least one of the measuring devices includes a capacity-by-voltage device, according to an embodiment. The system further includes a display in communication with the controller in various embodiments. The display is adapted to provide a depiction of battery longevity in units of time remaining in the life of the implantable medical device battery, according to various embodiments. Other aspects and embodiments are provided herein.
    Type: Application
    Filed: November 2, 2011
    Publication date: May 10, 2012
    Inventors: Rajesh Krishan Gandhi, William J. Linder, Michael J. Lyden, Nicholas J. Stessman, Jonathan H. Kelly, James Kalgren
  • Patent number: 8055343
    Abstract: One aspect of this disclosure relates to a system for dynamic battery management in implantable medical devices. An embodiment of the system includes two or more devices for measuring battery capacity for an implantable medical device battery. The embodiment also includes a controller connected to the measuring devices. The controller is adapted to combine the measurements from the measuring devices using a weighted average to determine battery capacity consumed. According to various embodiments, at least one of the measuring devices includes a coulometer. At least one of the measuring devices includes a capacity-by-voltage device, according to an embodiment. The system further includes a display in communication with the controller in various embodiments. The display is adapted to provide a depiction of battery longevity in units of time remaining in the life of the implantable medical device battery, according to various embodiments. Other aspects and embodiments are provided herein.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: November 8, 2011
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Rajesh Krishan Gandhi, William J. Linder, Michael J. Lyden, Nicholas J. Stessman, Jonathan H. Kelly, James Kalgren
  • Publication number: 20110144713
    Abstract: This document discusses, among other things, systems and methods for automatic electrode integrity management. Interelectrode impedance is measured for various electrode combinations of an implantable cardiac function management device. The impedance data is processed, such as at an external remote server, to determine whether an electrode is failing or has failed, to select an alternate electrode configuration, to alert a physician or patient, to predict a time-to-failure such as by using population data, or to reprogram electrode configuration or other device parameters of the implantable cardiac function management device.
    Type: Application
    Filed: February 22, 2011
    Publication date: June 16, 2011
    Inventors: Derek D. Bohn, M. Jason Brooke, Rajesh Krishan Gandhi, Alok S. Sathaye, Aaron McCabe
  • Patent number: 7899535
    Abstract: This document discusses, among other things, systems and methods for automatic electrode integrity management. Interelectrode impedance is measured for various electrode combinations of an implantable cardiac function management device. The impedance data is processed, such as at an external remote server, to determine whether an electrode is failing or has failed, to select an alternate electrode configuration, to alert a physician or patient, to predict a time-to-failure such as by using population data, or to reprogram electrode configuration or other device parameters of the implantable cardiac function management device.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: March 1, 2011
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Derek D. Bohn, M. Jason Brooke, Rajesh Krishan Gandhi, Alok S. Sathaye, Aaron McCabe
  • Publication number: 20080097544
    Abstract: One aspect of this disclosure relates to a system for dynamic battery management in implantable medical devices. An embodiment of the system includes two or more devices for measuring battery capacity for an implantable medical device battery. The embodiment also includes a controller connected to the measuring devices. The controller is adapted to combine the measurements from the measuring devices using a weighted average to determine battery capacity consumed. According to various embodiments, at least one of the measuring devices includes a coulometer. At least one of the measuring devices includes a capacity-by-voltage device, according to an embodiment. The system further includes a display in communication with the controller in various embodiments. The display is adapted to provide a depiction of battery longevity in units of time remaining in the life of the implantable medical device battery, according to various embodiments. Other aspects and embodiments are provided herein.
    Type: Application
    Filed: October 20, 2006
    Publication date: April 24, 2008
    Inventors: Rajesh Krishan Gandhi, William J. Linder, Michael J. Lyden, Nicholas J. Stessman, Jonathan H. Kelly, James Kalgren
  • Publication number: 20070293903
    Abstract: This document discusses, among other things, systems and methods for automatic electrode integrity management. Interelectrode impedance is measured for various electrode combinations of an implantable cardiac function management device. The impedance data is processed, such as at an external remote server, to determine whether an electrode is failing or has failed, to select an alternate electrode configuration, to alert a physician or patient, to predict a time-to-failure such as by using population data, or to reprogram electrode configuration or other device parameters of the implantable cardiac function management device.
    Type: Application
    Filed: June 16, 2006
    Publication date: December 20, 2007
    Inventors: Derek D. Bohn, M. Jason Brooke, Rajesh Krishan Gandhi, Alok S. Sathaye, Aaron McCabe
  • Patent number: 7194308
    Abstract: A system and method monitors or reports the battery status of an implantable medical device to a user. The battery terminal voltage and charge delivered are measured. Before the battery terminal voltage falls below an Elective Replacement Indicator (ERI) threshold voltage, a charge-delivered indication of battery status is provided to a user. Thereafter, a battery terminal voltage indication of battery status is provided to a user. The Elective Replacement Indicator (ERI) and End of Life (EOL) threshold voltages are each functions of delivered battery current. A fault current detection is also provided to a user. A device temperature sensor discounts the battery voltage reading when the device is too cold.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: March 20, 2007
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: David B. Krig, Kenneth Tobacman, Scot Boon, Kristofer J. James, Rajesh Krishan Gandhi
  • Publication number: 20050102005
    Abstract: This document discusses, among other things, a system and method of monitoring or reporting battery status of an implantable medical device. The battery terminal voltage and charge delivered are measured. Before the battery terminal voltage falls below an Elective Replacement Indicator (ERI) threshold voltage, a charge-delivered indication of battery status is provided. Thereafter, a battery terminal voltage indication of battery status is provided. The Elective Replacement Indicator (ERI) and End of Life (EOL) threshold voltages are each functions of delivered battery current. A fault current detection is also provided. A device temperature sensor discounts the battery voltage reading when the device is too cold.
    Type: Application
    Filed: November 12, 2003
    Publication date: May 12, 2005
    Inventors: David Krig, Kenneth Tobacman, Scot Boon, Kristofer James, Rajesh Krishan Gandhi